n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 31 |
4 | 109 |
5 | 335 |
6 | 1002 |
7 | 2741 |
8 | 7168 |
9 | 17685 |
10 | 41801 |
11 | 94377 |
12 | 205277 |
13 | 430087 |
14 | 872302 |
15 | 1714941 |
16 | 3278477 |
17 | 6103521 |
18 | 11091375 |
19 | 19700943 |
20 | 34265319 |
21 | 58429093 |
22 | 97816791 |
23 | 160944051 |
24 | 260558245 |
25 | 415434960 |
26 | 652940560 |
27 | 1012418264 |
28 | 1549884617 |
29 | 2344153951 |
30 | 3505141354 |
[1,2,9,31,109,335,1002,2741,7168,17685,41801, 94377,205277,430087,872302,1714941,3278477, 6103521,11091375,19700943,34265319,58429093, 97816791,160944051,260558245,415434960,652940560, 1012418264,1549884617,2344153951,3505141354] |